This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In a restaurant, the proportion of people who order coffee with their dinner is .9 . A simple random ... (Read 112 times)

mcmcdaniel

  • Hero Member
  • *****
  • Posts: 550
on: Jun 24, 2018
In a restaurant, the proportion of people who order coffee with their dinner is .9 . A simple random sample of 144 patrons of the restaurant is taken.
 a. What are the expected value, standard deviation, and shape of the sampling distribution of ?
  b. What is the random variable in this problem? Define it in words.
  c. What is the probability that the proportion of people who will order coffee with their meal is between .85 and .875?
 d. What is the probability that the proportion of people who will order coffee with their meal is at least .945?

Question 2

Given that z is a standard normal random variable, what is the value of z if the area to the right of z is .1112?
 a. .3888
  b. 1.22
  c. 2.22
  d. 3.22


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .9; .025; normal
b. p the sample proportion of people who order coffee with their dinners out of 144 patrons
c. .1359
d. .0359

Answer to Question 2

b


mcmcdaniel

  • Member
  • Posts: 550
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

carlsona147

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

A farmer with a pitchfork, wearing a hat identifying him as a Granger, warns of an oncoming “Consoli A farmer with a pitchfork, wearing a hat identifying him as a Granger, warns of an oncoming “Consoli
This image captures a protest of people who want the privilege of “naming” themselves. This image captures a protest of people who want the privilege of “naming” themselves.
Faith Ringgold, God Bless America, No. 13 from the series American People. Faith Ringgold, God Bless America, No. 13 from the series American People.
Marketing: Real People, Real Choices Marketing: Real People, Real Choices
An organizational specialist is hired as a consultant to a company planning to open a coffee ... An organizational specialist is hired as a consultant to a company planning to open a coffee ...
Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ... Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ...
Video: Requirements for nervous signals

For a complete list of videos, visit our video library